1N-COUNT 替补队员 In team games such as football, a sub is a player who is brought into a match to replace another player. 替补队员 [informal]
We had a few injuries and had to use youth team kids as subs.
我们有几名队员有伤,只好用青年队的小队员做替补。
2N-COUNT 同 submarine A sub is the same as a submarine . 同 submarine [informal]
3N-PLURAL (向俱乐部、协会缴纳的)会员费 A fixed amount of money that you pay regularly in order to be a member of a club or society is called your subs . (向俱乐部、协会缴纳的)会员费 [British, old-fashioned]